CVE-2023-35796Network attack vector

SYSTEM code execution via SNMP sysLocation script injection

Published Oct 10, 2023 · Updated Sep 19, 2024

Stored cross-site scripting in Siemens SINEMA Server V14 allows remote attackers controlling a monitored device to execute code as SYSTEM. The SNMP sysLocation OID processing path inadequately validates device-supplied data, enabling arbitrary script injection. Exploitation requires control of a monitored device and a user to view the malicious page or file; the resulting code runs as SYSTEM on the server.

CVSS severity8.3
High
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Stored cross-site scripting in Siemens SINEMA Server V14 allows remote attackers controlling a monitored device to execute code as SYSTEM. The SNMP sysLocation OID processing path inadequately validates device-supplied data, enabling arbitrary script injection. Exploitation requires control of a monitored device and a user to view the malicious page or file; the resulting code runs as SYSTEM on the server.

The record

CVE
CVE-2023-35796
Published
Oct 10, 2023
Updated
Sep 19, 2024
Vendor
Siemens
Product
SINEMA Server
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 10, 2023CVE publishedPublication date reported by the CVE source.
  2. Sep 19, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=All versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Siemens · SINEMA Serverversion=All versions

Published CVSS scores

8.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H
8.3Siemens ProductCERTCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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